CASE 17 History: A 70-year-old woman presents with gastroesophageal reflux symptoms. 1. Which of the following should be included in the differential diagnosis of this case? (Choose all that apply.) A. Benign lymphoid hyperplasia B. Brunner’s gland hyperplasia 2. What can occur as a response to increased acidity in the duodenal bulb? A. Benign lymphoid hyperplasia B. Brunner’s gland hyperplasia 3. Which of the following polyposis syndromes does not involve the duodenum? A. Familial adenomatous polyposis 4. What is the most common benign tumor of the duodenum?